feat: Implement Android share functionality and background sync

- Add ShareRoomPicker component for selecting rooms to share Android intents.
- Introduce AndroidShare utility for handling shared files and payloads from Android.
- Implement background synchronization with UnifiedPush for Android notifications.
- Enhance notification handling in Tauri and Capacitor environments.
- Update TypeScript configuration for better module resolution.
- Create Capacitor configuration file for Android integration.
- Add SVG icon for notifications.
- Refactor media URL authentication checks in matrix utility.

capacitor.config.json

@@ -0,0 +1,12 @@
+{
+  "appId": "com.paarrot.app",
+  "appName": "Paarrot",
+  "webDir": "dist",
+  "bundledWebRuntime": false,
+  "plugins": {
+    "LocalNotifications": {
+      "smallIcon": "ic_stat_paarrot",
+      "iconColor": "#FF8A00"
+    }
+  }
+}